Class CredentialProvider
Credential providers are functions that accept no arguments and return a
promise that is fulfilled with an Aws\Credentials\CredentialsInterface
or rejected with an Aws\Exception\CredentialsException.
use Aws\Credentials\CredentialProvider; $provider = CredentialProvider::defaultProvider(); // Returns a CredentialsInterface or throws. $creds = $provider()->wait();
Credential providers can be composed to create credentials using conditional logic that can create different credentials in different environments. You can compose multiple providers into a single provider using Aws\Credentials\CredentialProvider::chain. This function accepts providers as variadic arguments and returns a new function that will invoke each provider until a successful set of credentials is returned.
// First try an INI file at this location. $a = CredentialProvider::ini(null, '/path/to/file.ini'); // Then try an INI file at this location. $b = CredentialProvider::ini(null, '/path/to/other-file.ini'); // Then try loading from environment variables. $c = CredentialProvider::env(); // Combine the three providers together. $composed = CredentialProvider::chain($a, $b, $c); // Returns a promise that is fulfilled with credentials or throws. $promise = $composed(); // Wait on the credentials to resolve. $creds = $promise->wait();
Methods Summary
-
static
defaultProvider ( array $config = [] )
Create a default credential provider that first checks for environment variables, then checks for the "default" profile in ~/.aws/credentials, then checks for "profile default" profile in ~/.aws/config (which is the default profile of AWS CLI), then tries to make a GET Request to fetch credentials if Ecs environment variable is presented, and finally checks for EC2 instance profile credentials.
-
static
fromCredentials ( Aws\Credentials\CredentialsInterface $creds )
Create a credential provider function from a set of static credentials.
-
static
chain ( )
Creates an aggregate credentials provider that invokes the provided variadic providers one after the other until a provider returns credentials.
-
static
memoize ( callable $provider )
Wraps a credential provider and caches previously provided credentials.
-
static
cache ( callable $provider, Aws\CacheInterface $cache, string|null $cacheKey = null )
Wraps a credential provider and saves provided credentials in an instance of Aws\CacheInterface. Forwards calls when no credentials found in cache and updates cache with the results.
-
static
env ( )
Provider that creates credentials from environment variables AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY, and AWS_SESSION_TOKEN.
-
static
instanceProfile ( array $config = [] )
Credential provider that creates credentials using instance profile credentials.
-
static
ecsCredentials ( array $config = [] )
Credential provider that creates credentials using ecs credentials by a GET request, whose uri is specified by environment variable
-
static
assumeRole ( array $config = [] )
Credential provider that creates credentials using assume role
-
static
ini ( string|null $profile = null, string|null $filename = null )
Credentials provider that creates credentials using an ini file stored in the current user's home directory.
Methods Details
static callable defaultProvider ( array $config = [] )
Create a default credential provider that first checks for environment variables, then checks for the "default" profile in ~/.aws/credentials, then checks for "profile default" profile in ~/.aws/config (which is the default profile of AWS CLI), then tries to make a GET Request to fetch credentials if Ecs environment variable is presented, and finally checks for EC2 instance profile credentials.
This provider is automatically wrapped in a memoize function that caches previously provided credentials.
Parameters
| array | $config = [] | Optional array of ecs/instance profile credentials provider options. |
Returns
| callable |
static
callable
fromCredentials (
Aws\Credentials\CredentialsInterface
$creds
)
Create a credential provider function from a set of static credentials.
Parameters
Aws\Credentials\CredentialsInterface |
$creds |
Returns
| callable |
static callable chain ( )
Creates an aggregate credentials provider that invokes the provided variadic providers one after the other until a provider returns credentials.
Returns
| callable |
static callable memoize ( callable $provider )
Wraps a credential provider and caches previously provided credentials.
Ensures that cached credentials are refreshed when they expire.
Parameters
| callable | $provider | Credentials provider function to wrap. |
Returns
| callable |
static
callable
cache (
callable
$provider,
Aws\CacheInterface
$cache,
string|null
$cacheKey = null
)
Wraps a credential provider and saves provided credentials in an instance of Aws\CacheInterface. Forwards calls when no credentials found in cache and updates cache with the results.
Defaults to using a simple file-based cache when none provided.
Parameters
| callable | $provider | Credentials provider function to wrap |
Aws\CacheInterface |
$cache | Cache to store credentials |
| string|null | $cacheKey = null | (optional) Cache key to use |
Returns
| callable |
static callable env ( )
Provider that creates credentials from environment variables AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY, and AWS_SESSION_TOKEN.
Returns
| callable |
static
Aws\Credentials\InstanceProfileProvider
instanceProfile (
array
$config = []
)
Credential provider that creates credentials using instance profile credentials.
Parameters
| array | $config = [] | Array of configuration data. |
Returns
Aws\Credentials\InstanceProfileProvider |
See
static
Aws\Credentials\EcsCredentialProvider
ecsCredentials (
array
$config = []
)
Credential provider that creates credentials using ecs credentials by a GET request, whose uri is specified by environment variable
Parameters
| array | $config = [] | Array of configuration data. |
Returns
Aws\Credentials\EcsCredentialProvider |
See
static callable assumeRole ( array $config = [] )
Credential provider that creates credentials using assume role
Parameters
| array | $config = [] | Array of configuration data |
Returns
| callable |
See
static callable ini ( string|null $profile = null, string|null $filename = null )
Credentials provider that creates credentials using an ini file stored in the current user's home directory.
Parameters
| string|null | $profile = null | Profile to use. If not specified will use the "default" profile in "~/.aws/credentials". |
| string|null | $filename = null | If provided, uses a custom filename rather than looking in the home directory. |
Returns
| callable |
Constants summary
string |
ENV_KEY
|
#
'AWS_ACCESS_KEY_ID'
|
string |
ENV_SECRET
|
#
'AWS_SECRET_ACCESS_KEY'
|
string |
ENV_SESSION
|
#
'AWS_SESSION_TOKEN'
|
string |
ENV_PROFILE
|
#
'AWS_PROFILE'
|
